OBD2 Link Error

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May 11, 2019 | 08:57 AM

BigBoomer

Thread Starter

Racer

Joined: Mar 2018

Posts: 1,287

Likes: 391

From: ESSEX, UK

OBD2 Link Error

Hi All,
When I first bought my 2004 I could read the codes with an OBD2 reader with no problems.
I then bought and tried a mini-VCI cable with Techstream (never got it to work) and since then even my old OBD2 reader just gives a Link Error.
Does anyone know how to reset or fix this? I now have another VSC Off/CEL and need to read the codes to find out what it is, but can't.
I may have to resort to going to a Lexus dealer to read the codes.
Thanks,
George

May 11, 2019 | 06:31 PM

Yamae

CL Community Team

Joined: Aug 2011

Posts: 4,184

Likes: 1,010

From: Japan

I worry that the chip used for the communication port was damaged. This sometimes happens among cheap pirated ones. Those don't have surge protections.

May 13, 2019 | 06:34 AM

BigBoomer

Thread Starter

Racer

Joined: Mar 2018

Posts: 1,287

Likes: 391

From: ESSEX, UK

Quote:

Originally Posted by Yamae

I worry that the chip used for the communication port was damaged. This sometimes happens among cheap pirated ones. Those don't have surge protections.

That would suck big time. I'll take it to a Lexus dealer and ask them to read the code for me. If they can't then I have a bigger problem.

May 13, 2019 | 11:12 PM

razvy

Rookie

Joined: Mar 2019

Posts: 92

Likes: 11

From: NY

Make sure nothing it's stuck in the plug, I had a platic tab broken once and it got stock in the female plug witch prevented full contact .

Last edited by razvy; May 13, 2019 at 11:16 PM.

May 18, 2019 | 09:29 AM

BigBoomer

Thread Starter

Racer

Joined: Mar 2018

Posts: 1,287

Likes: 391

From: ESSEX, UK

Hi all, problem solved, was a busted wire. I removed the panel the OBD2 connector is fitted to and as soon as it came out I could see the problem.
Popped the connector out and soldered the wire back on, and hey presto we have Link.
The code I wanted to read turned out to be P0420 (Bank 1) so either I need to replace one of the O2 sensors, or else I have other problems like a leaky header-CAT gasket or a crack in the Y pipe..
I've reset it so we will see if it appears again. Hasn't so far on a 20 mile test loop.

May 18, 2019 | 09:31 AM

razvy

Rookie

Joined: Mar 2019

Posts: 92

Likes: 11

From: NY

Good Job !

Sep 17, 2020 | 11:45 PM

F16uae

Driver School Candidate

Joined: May 2020

Posts: 22

Likes: 2

From: Sharjah

Quote:

Originally Posted by BigBoomer

hey bro same Issue with my After Scanning through techstream I am Unable to Use any ob2 scanner It just Shows Fail to link How did U get it fixed Plz reply I will be so grateful to you

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Sep 18, 2020 | 04:31 AM

BigBoomer

Thread Starter

Racer

Joined: Mar 2018

Posts: 1,287

Likes: 391

From: ESSEX, UK

Quote:

Originally Posted by F16uae

hey bro same Issue with my After Scanning through techstream I am Unable to Use any ob2 scanner It just Shows Fail to link How did U get it fixed Plz reply I will be so grateful to you

My problem was that although I thought it was plugged into the ODB2 port, only the power was connected.
Try pushing hard to connect it. You will have to reach behind the socket to support it.
Once I made sure that it was fully connected, all worked as it should. 😁